The rapid expansion of artificial intelligence data centres worldwide may be contributing to increased local temperatures, according to new research led by the University of Cambridge. The study suggests that these facilities can create “data heat islands”, raising surrounding land temperatures by an average of 2°C, with higher spikes recorded in certain areas. The effect is estimated to impact hundreds of millions of people globally.
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Researchers analysed two decades of satellite data alongside information from thousands of data centres to isolate their environmental impact. The findings indicate that heat generated by computing processes and cooling systems can extend several miles beyond the sites themselves, producing effects comparable to urban heat islands typically seen in large cities.
The study identified notable temperature increases in regions including parts of Spain, Mexico and Brazil, where data centre development has intensified. While the research has yet to undergo peer review, it highlights potential environmental concerns associated with the growing demand for large-scale computing infrastructure. Experts have also noted that further analysis is required to confirm the scale of the impact.
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Specialists have proposed a range of measures to mitigate the effects, including more efficient software, improved hardware and advanced cooling technologies. The findings contribute to an ongoing debate about balancing technological progress with environmental sustainability, as demand for artificial intelligence continues to rise.
